databases/mysql-connector-c: Fix build for non-base SSL, support LibreSSL
Also, SSL is only a build requirement.
While here, prevent extract shared libraries from building on DragonFly.
Approved by: SSL blanket
(Only the first 10 of 11 ports in this commit are shown above. )
- New port: databases/mysql-connector-c
MySQL Connector/C is a C client library for client/server communication.
It is a standalone replacement for the MySQL Client Library shipped with
the MySQL Server.